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van den Hurk, K. (author), van Dommelen, P. (author), van Buuren, S. (author), Verkerk, P.H. (author), HiraSing, R.A. (author), TNO Kwaliteit van Leven (author)
Objective: To assess the prevalence of overweight and obesity in children living in the Netherlands and compare the findings with the Third and Fourth National Growth Studies carried out in 1980 and 1997, respectively. Design and methods: Data were obtained from the child health care system. International cut-off points for body mass index (BMI)...
article 2007
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Dousma, M. (author), Wierdsma, N. (author), van Ede, J. (author), van Buuren, S. (author), Heijmans, H.S.A. (author), de Vries, T.W. (author), TNO Kwaliteit van Leven (author)
article 2007
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van Buuren, S. (author), TNO Kwaliteit van Leven (author)
The goal of multiple imputation is to provide valid inferences for statistical estimates from incomplete data. To achieve that goal, imputed values should preserve the structure in the data, as well as the uncertainty about this structure, and include any knowledge about the process that generated the missing data. Two approaches for imputing...
article 2007
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Heymans, M.W. (author), van Buuren, S. (author), Knol, D.L. (author), van Mechelen, W. (author), de Vet, H.C.W. (author), TNO Kwaliteit van Leven (author)
Background. Missing data is a challenging problem in many prognostic studies. Multiple imputation (MI) accounts for imputation uncertainty that allows for adequate statistical testing. We developed and tested a methodology combining MI with bootstrapping techniques for studying prognostic variable selection. Method. In our prospective cohort...
article 2007
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van Dommelen, P. (author), van Wouwe, J.P. (author), Breuning-Boers, J.M. (author), van Buuren, S. (author), Verkerk, P.H. (author), TNO Kwaliteit van Leven (author)
Objective: The validity of the rule of thumb that infants may have a weight loss of 10% in the first days after birth is unknown. We assessed the validity of this and other rules to detect breast-fed infants with hypernatraemic dehydration. Design: A reference chart for relative weight change was constructed by the LMS method. The reference...
article 2007
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Borghi, E. (author), de Onis, M. (author), Garza, C. (author), van den Broeck, J. (author), Frongillo, E.A. (author), Grummer-Strawn, L. (author), van Buuren, S. (author), Pan, H. (author), Molinari, L. (author), Martorell, R. (author), Onyango, A.W. (author), Martines, J.C. (author), Pinol, A. (author), Siyam, A. (author), Victoria, C.G. (author), Bhan, M.K. (author), Araújo, C.L. (author), Lartey, A. (author), Owusu, W.B. (author), Bhandari, N. (author), Norum, K.R. (author), Bjoerneboe, G.-E.Aa. (author), Mohamed, A.J. (author), Dewey, K.G. (author), Belbase, K. (author), Chumlea, C. (author), Cole, T. (author), Shrimpton, R. (author), Albernaz, E. (author), Tomasi, E. (author), de Cássia Fossati da Silveira, R. (author), Nader, G. (author), Sagoe-Moses, I. (author), Gomez, V. (author), Sagoe-Moses, C. (author), Taneja, S. (author), Rongsen, T. (author), Chetia, J. (author), Sharma, P. (author), Bahl, R. (author), Baerug, A. (author), Tufte, E. (author), Alasfoor, D. (author), Prakash, N.S. (author), Mabry, R.M. (author), Al Rajab, H.J. (author), Helmi, S.A. (author), Nommsen-Rivers, L.A. (author), Cohen, R.J. (author), Heinig, M.J. (author), TNO Kwaliteit van Leven (author)
The World Health Organization (WHO), in collaboration with a number of research institutions worldwide, is developing new child growth standards. As part of a broad consultative process for selecting the best statistical methods, WHO convened a group of statisticians and child growth experts to review available methods, develop a strategy for...
article 2006
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van Buuren, S. (author), Boshuizen, H.C. (author), Reijneveld, S.A. (author), TNO Kwaliteit van Leven (author)
Background. Guidelines for screening and subsequent treatment of hypertension vary widely between countries. Part of this variation can be attributed to systematic differences between populations, but little is known about the way in which guidelines should be targeted to the population of interest. Optimal guidelines should have high yield and...
article 2006
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Kalanda, B.F. (author), van Buuren, S. (author), Verhoeff, F.H. (author), Brabin, B.J. (author), TNO Kwaliteit van Leven (author)
The aim of this analysis was to construct cross-sectional gestational age specific percentile curves for birthweight, length, head and mid-arm circumference for Malawian babies, and to compare these percentiles with reference values for babies born to women with normal pregnancies, from a developed country. A cross-sectional study which enrolled...
article 2005
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Kalanda, B.F. (author), van Buuren, S. (author), Verhoeff, F.H. (author), Brabin, B.J. (author), TNO Kwaliteit van Leven (author)
Objective: To describe fetal growth centiles in relation to maternal malaria and HIV status, using cross sectional measurements at birth. Design: A cross sectional study of pregnant women and their babies. Data on maternal socioeconomic status and current pregnancy, including HIV status and newborn anthropometry, were collected. Malaria...
article 2005
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van Dommelen, P. (author), van Buuren, S. (author), Zandwijken, G.R.J. (author), Verkerk, P.H. (author), TNO Kwaliteit van Leven (author)
The goal of this study is to assess whether a growth curve model approach will lead to a more precise detection of Turner sydnrome (TS) than conventional referral criteria for growth monitoring. The Jenss-Bayley growth curve model was used to describe the process of growth over time. A new screening rule is defined on the parameters of this...
article 2005
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Fredriks, A.M. (author), van Buuren, S. (author), Hira Sing, R.A. (author), Wit, J.M. (author), Verloove-Vanhorick, S.P. (author)
Aim: Prevalences of overweight in The Netherlands, defined by international cut-off points, are presented in 14 500 children of Dutch origin, 2904 of Turkish and 2855 of Moroccan origin, aged 0-21 y. Results: The mean prevalence for Turkish boys and girls was 23.4% and 30.2%, for Moroccans 15.8% and 24.5%, for Dutch youths in large cities 12.6%...
article 2005
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Kalanda, B.F. (author), van Buuren, S. (author), Verhoeff, F.H. (author), Brabin, B.J. (author), TNO Kwaliteit van Leven (author)
Introduction: Infant growth has not been studied in developing countries in relation to maternal factors related to malaria in pregnancy and maternal illiteracy. Objective: To describe growth patterns in infants with low and normal birthweight and determine maternal risk factors for infant undernutrition. Methods: Babies born in a rural district...
article 2005
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Fredriks, A.M. (author), van Buuren, S. (author), Fekkes, M. (author), Verloove-Vanhorick, S.P. (author), Wit, J.M. (author)
The aim of this study was to present age references for waist circumference (WC), hip circumference (HC), and waist/hip ratio (WHR) in Dutch children. Cross-sectional data were obtained from 14,500 children of Dutch origin in the age range 0-21 years. National references were constructed with the LMS method. This method summarises the...
article 2005
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Fredriks, A.M. (author), van Buuren, S. (author), van Heel, W.J.M. (author), Dijkman-Neerincx, R.H.M. (author), Verloove-Vanhorick, S.P. (author), Wit, J.M. (author), TNO Kwaliteit van Leven (author)
Aims: To obtain age references for sitting height (SH), leg length (LL), and SH/H ratio in the Netherlands; to evaluate how SH standard deviation score (SDS), LL SDS, SH/H SDS, and SH/LL SDS are related to height SDS; and to study the usefulness of height corrected SH/H cut-off lines to detect Marfan syndrome and hypochondroplasia. Methods:...
article 2005
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van Buuren, S. (author), Bonnemaijer-Kerckhoffs, D.J.A. (author), Grote, F.K. (author), Wit, J.M. (author), Verkerk, P.H. (author), TNO Preventie en Gezondheid (author)
The number of referrals under strict adherence to the Dutch consensus guidelines for short stature was estimated using longitudinal data from 970 children (0-10 years). Results showed that over 38% of all children would have to be referred one or more times. There is therefore a clear need to revise the current guidelines.
article 2004
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van Dommelen, P. (author), de Gunst, M.C.M. (author), van der Vaart, A.W. (author), van Buuren, S. (author), Boomsma, D.I. (author), TNO Preventie en Gezondheid (author)
Objective. To determine the magnitude of the growth retardation in Dutch monozygotic and dizygotic twins during infancy in comparison with the Dutch reference growth charts for general population infants from 1997 and to construct reference growth charts for twins. Design. Descriptive. Method. The growth of twins was studied using longitudinal...
article 2004
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van Buuren, S. (author), TNO Preventie en Gezondheid (author)
Objective. To determine the cut-off values for the body-mass index (BMI) for underweight and serious underweight in children up to 18 years of age based on the Dutch growth standards of 1980, and to determine the prevalence of underweight and serious underweight in the 1997 Dutch growth-study figures. Design. Secondary data analysis. Method. Cut...
article 2004
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Hulst, J. (author), Joosten, K. (author), Zimmermann, L. (author), Hop, W. (author), van Buuren, S. (author), Büller, H. (author), Tibboel, D. (author), van Goudoever, J. (author), TNO Preventie en Gezondheid (author)
Background & Aims: Little is known about the nutritional status of critically ill children during hospitalisation in and after discharge from an intensive care unit. We set up a prospective, observational study to evaluate the nutritional status of children in an intensive care unit from admission up to 6 months after discharge. A secondary aim...
article 2004
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Fredriks, A.M. (author), van Buuren, S. (author), Jeurissen, S.E.R. (author), Dekker, F.W. (author), Verloove-Vanhorick, S.P. (author), Wit, J.M. (author)
The aim of this study was to provide growth and sexual maturation reference data for Turkish children living in The Netherlands. We also compared these references with the reference data of children of Dutch origin and with Turkish reference data collected in Turkey and elsewhere in Europe. Cross-sectional growth and demographic data were...
article 2003
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van Buuren, S. (author), Eyres, S. (author), Tennant, A. (author), Hopman-Rock, M. (author), TNO Preventie en Gezondheid (author)
Background: Comparability of health data is a major challenge within the context of the Health Monitoring Programme of the European Commission. A common problem in surveys is that many variations of essentially the same question exist. Methods: Response conversion is a new method for improving comparability by scaling the data onto a common...
article 2003
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